Power
The efficient redundancy for power supplies
Maximilian Hülsebusch from PULS here reviews advances in reliable power system availability in the event of a short circuit. N+1 redundant power module connection guarantees reliable system availability even if a power supply fails. However, the common use of decoupling diodes in such modules causes a large voltage drop leading to high power losses generating heat.
TVS diode arrays protect I/O and power ports from ESD
Littelfuse, Inc. has introduced two series of AEC-Q101-qualified, unidirectional TVS Diode Arrays optimised to protect I/O and power ports against electrostatic discharges (ESDs). SP1053 and SP1054 Series TVS Diode Arrays (SPA Diodes) integrate avalanche breakdown diodes fabricated using proprietary silicon avalanche technology to protect each pin.
Tantalum capacitors for non-critical medical devices
AVX Corporation has released the T4Z Medical Series HRC4000 medical-grade tantalum capacitors. Designed to replace commercial capacitors in the filtering, hold-up, and charging circuits of non-critical medical devices that require high-reliability and strict change control.
DC/DC power modules feature a simplified design
Designers working on space-constrained applications can now dramatically reduce solution size and increase efficiency with the family of micro system-level IC ('uSLIC') modules from Maxim Integrated. The MAXM17532 and MAXM15462 ultra-small (2.6x3.0x1.5mm), integrated DC/DC power modules are part of Maxim's extensive portfolio of Himalaya power solutions that enable industrial, healthcare, communications, and consumer markets.
Flyback switcher ICs cut power losses by 25%
A family of offline flyback switcher ICs from Power Integrations that offer efficiency of up to 94% are available from RS Components. They suit state-of-the-art compact power supply designs. The family can also cut power supply losses by a further 25% when compared to the previous generation, enabling the development of small and lightweight power supplies that do not require heatsinks, but can still handle up to 65W of power.
Pulse transformers meet PoE++ Applications up to 60W
The B82806D pulse transformers from EPCOS are available from Mouser Electronics. The transformers are designed specifically for the IEEE 802.3bt Power over Ethernet++ (PoE++) standard for supplying devices with higher power demands, such as video and point-of-sale systems, lighting controllers, fire alarm systems, and building access systems.
Power supply units range from 120W to 960W for 2 and 3-phase operation
RECOM takes another step in expanding its power solutions portfolio for industrial applications with a power range from 0.25W to 1000W by introducing 2 and 3-phase AC/DC DIN-Rail PSUs. As the central power supply unit, the REDIN/3AC series are designed for extraordinary stability in harsh automation environments and will still continue to operate reliably from mains voltages of 320 up to 575VAC even when one phase fails.
Why AC/DC variable voltage sources are still necessary for testing
Producing robust variable-output power for electronic applications has not always been easy. Even now, in many higher current and high voltage applications, variable voltage sources that use modern electronics can become expensive and less robust. Steve Hughes, Managing Director of REO UK, explains why AC/DC variable voltage sources are still essential in testing applications.
Step down converters deliver low quiescent current
System designers looking to create small and highly efficient 40V load dump-tolerant applications can now utilise the ultra-compact, pin-compatible MAX20075 and MAX20076 step-down converters from Maxim Integrated. According to the company, the step-down converters offer the industry's lowest quiescent current (IQ) and comes in an ultra-small size solution with integrated compensation.
Power connector combines high currents and signal transmission
A new hybrid industrial connector has been developed by HARTING as the new Han M23 Power, which combines the capability to transmit both power and signals with a high degree of environmental protection. The new connector extends the Han M23 series by allowing the industrial lifelines of signal and power to be fully supplied from a single device.